Road-strip and dowel-bar support



Sept. 10, 1929. w. E. wHlTE ROAD STRIP AND DOWEL BAR SUPPORT Filed Oct.ll, 1926 mvg GU N

Patented Sept. 10, 1929.

UNITED STATES PATENT QFFICE-f WILLIAM E. WHITE, or CHICAGO, ILLINOIS,ASSIGNOE TOKALMAN STEEL`Co1vi1 n1\nr,` y

n OE CHICAGO, ILLINOIS, A ConroRA'rIon'oE DELAWARE.

ROAD-STRIP AND noWEL-Bnn SUPPORT. y

Application filed October 11, 1926. Serial No.` 140,883.

My invention relates to concrete road construction and particularly to anovel temporary support for the strip and transverse dowel bar.

In the building of roads, it is common practice to provide alongitudinal strip located at the center of the road acting as a partingstrip, the strip being of generally channel shape in cross section,thereby providing a tongue and groove in the abutting slabs of concrete.It is the custom also to provide short lengths of rods or bars extendingtransversely across the parting line and located at suitably spacedintervals for the purpose of tying together the adjacent slabs.

Obviously means must be provided for po- Sitioning the strip and barsections prior to and during the pouring of the concrete, and manyexpedients have been adopted for that purpose. The device here disclosedis intended as a temporary support both for the strip and bar, thedevice being lifted vertically from the plastic mass after it hasaccomplished its purpose; thus the devices are salvaged and repeatedlyused.

A feature of importance in the device here disclosed is that itsstability is dependent not on penetration of the supporting soil, but onthe lateral bracing effect of the Side arms or legs. This will be foundto be of advantage where the soil is hard or rocky; in any event, itavoids the necessity for eX- tensive driving of stakes and reduces theamount of force necessary to remove the holder after the concrete ispoured. When the device herein disclosed is used, the vertical holescommonly provided in the channel of the strip are unnecessary. Theelimination of the punching cost and the cost of the stakes heretoforeused serves to materially reduce the cost of the work.

The invention will be more readily understood by reference to theaccompanying drawing, in which:

Fig, 1 is a side elevation of the device constructed in accordance withmy invention; and

Fig. 2 is an edge view thereof.

In the drawings, the road strip is indicated at A and the dowel bars atB, only one of which is shown.4 The road strip is Ofcommonconstruction,having ka V-shaped channel, 10, at a point midway of itsheight. An aperture is provided at theang-le ofthe V- shaped channelfor'the yaccommodationvof 5 the dowel bar B. f `f The supporting devicecomprises a pair of channel-shaped members, of `duplicate form, eachhaving a vertic`alleg,f11, 12, an inclined leg, 13, 14 and a connectingmember, 15, 16.*' The terminal kportions of the respective legs arepointed in order to' easily penetrate the soil tothe limited extent,indicated. Itwill be noted that the stability of the device is notdependent upon penetration but upon the lateralv bracing effect ofthestructure. The pair of members are united by means of the head, 17, thesides of which are riveted to the `flanges ofthe channel.Y An opening,18 may beprovided in the headfor engagement in lifting the device'fromthe concrete. Anotch,19,isprovided'inthe'side members of the head at apoint directly above the space occupied by the road strip A. Thus itwill beseen that the strip is held down wholly by engagement of thedevicewiththe dowel bar. p y g Each of the four legs, 11 12,13, 14, isprovided with a notch, 20, at the bottom',fby means of which the legsstraddle the bar yB. Thus the bar is held'down on two sides of the stripand is yfirmly'positioned. f" l With the parts in lthe position shownfin the drawings, the rough concreteis poured'approximately to theheightindicated by the broken line inFig. 1, `which will leave'the head, 17,and the connecting members, 15, 16 projecting'thereabove. The'supportingdevice is then lifted vertically leaving the strip and bar in place inthe concrete,after which the surfacing is done. i i f y The device isoffextreme simplicity, strong and rigid in construction andadaptedforuse for anindefinite period. f V Changes in the'form and yarrangement othe parts maybe made `without departure from the spirit of my invention.Iclaim: v f ',f ff

1. In a device for co-operation with a strip and dowelbar, thecombinationof a pair yof vertical members adapted to engage two sidesprising a pair of channels bent into inverted of thefstrip, to hold itin a vertical position,

and a pair of lateral brace members adapted to engage the top sideV ofthe bar, at opposite sides of and laterally removed from the verticalmembers, and means uniting said vertical and brace members. f Y e 2. Ina device for co-operation with a strip *i and dowel bar, the combinationof a pair of vertical members adaptedto engage two sides only of thestrip, to hold it in a vertical position, and a pair of lateral bracemembers adapted to engage the top side of the bar, at opposite sides ofand laterally removed Jfrom the vertical members, and means uniting saidvertical and brace members. e

U-shape a head for joining the bar, the space between the intermediatetwo legs being pro` pcrtioned to receive and tightly hold the striptherebetween, the outside two legs acting as braces tomaintain a stablestructure without material penetration of the soil by the'legs;

In testimony whereof I have affixed my signature.

' AIVILLIAM E. lWHITE.

3.In a device for co-operation with a strip and dowel bar, thecombination of a pair 'of vertical members lying alongside of the stripand adapted for slight penetration of the soil,

and a pair of brace membershavingbifurcated extremitiesV adapted toreceive the bar l at a point laterally removed from the verticalmembers, and means uniting the vertical and, brace members. Y

4. In a device for co-operation with a road strip and dowel bar, thecombination of a temporary holderfor said strip and bar, said holderconsisting of four laterally separated legs, the two intermediate legsengaging the sides of the strip for the purpose of holding it inavertical position, and the two outside legs bracing the structureagainstV lateral de lection. y

`5. In a device for co-operationiwith a strip and dowel; bar, thecombinationof a holder comprising four legs fand a head for joining thelegs, two `of Vthe intermediate legs being positioned to engage oppositesides of' the strip whereby to `maintain it in a vertical -posi'- tion,and the two outside legs engaging the bar at points a substantialdistance laterally from thestripy and unctioningto brace the structureduringthepouringof the concrete.

6.7y A temporaryY holding device for a strip and ybar,'comprising a pairof inverted Ui shaped members,'a head Jfor joining said pair of memberswhereby aV rigid four-legged structure `is formed, the space between the,two intermediate legs being proportioned to kreceive as'trip and thetwo outside legs being provided with means for engagement with the barandfracting toV brace the structure without Y substantial penetration ofthe soil. Y V7.1 In a device of the class described, 'the combinationwith a strip, of a pair of'vertical members adapted to engagethesides ofthe strip, to holdit in a Vvertical position, Va. pair of lateral bracemembers positioned to engage the top surface of the soil and hold thestructure against side tippingand a head joining all of said lmembersand adaptedto project above the level of the concrete poured around saidstrip. Y Y

8. A holdingdevice for road stripsicom-A llO

